Change Sublime Text 3 Title Bar Colour on macOS

Create a file with the same name as your theme in the User directory

❯ touch ~/Library/Application\ Support/Sublime\ Text\ 3/Packages/User/Material-Theme.sublime-theme

Enter the following in the file and adjust the RGB colours to your preference.

[
  {
    "class": "title_bar",
    "bg": [255, 152, 12],
    "fg": [0, 0, 0]
  }
]